输电塔-螺旋锚基础相互作用的研究

Response analysis of transmission tower-screw anchor interaction system

本文对一种新型杆塔基础-螺旋锚基础进行分析,给出了输电塔-螺旋锚基础相互作用的简化力学模型,利用Winkler假定模拟土的受力变形性质,用m法计算得出基础顶端横向作用力与位移的关系,作为上部结构的边界条件。采用有限元方法,推导了输电塔体系的整体刚度矩阵,利用自编的MATLAB程序,对某一输电塔分别按考虑和不考虑相互作用两种情况进行了计算、对比,考虑相互作用后,输电塔各节点的位移和杆件内力都相应地增大。本文进一步完善了螺旋锚基础的计算理论,具有一定的实用价值。

In this paper, according to the simplified model of mechanical calculation, the transmission tower - screw anchors interaction system was presented. A computer program is used to calculate one concrete transmission tower, and then two cases whether interaction or not is considered and compared.